Elegant Pencilfish (Nannostomus limatus)

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The Elegant Pencilfish (Nannostomus limatus) is a rare and graceful species, known for its slender body, metallic sheen, and peaceful demeanor. Native to the blackwater streams of Brazil, this species is only sporadically available in the aquarium trade and is prized by advanced hobbyists and biotope keepers. These wild-collected specimens display the natural beauty and subtle coloration that make this fish a true connoisseur’s choice.

What We Love About This Fish:

• Graceful and slender build with understated metallic coloring
• Rarely seen in the hobby
• Peaceful, shoaling nature ideal for planted nano and community tanks
• Low bioload and calm demeanor, perfect for blackwater setups

Natural Habitat:

Nannostomus limatus comes from acidic, tannin-rich waters in the Amazon basin of Brazil. These streams are shaded by overhanging vegetation and littered with leaf debris, creating dim, tranquil conditions with minimal water flow.

Aquascaping:

• Plants: Floating plants like Frogbit or Salvinia, plus fine-leaved species like Cabomba, or Java Moss
• Hardscape: Malaysian or Spiderwood driftwood and smooth river stones to mimic streambeds
• Botanicals: Indian Almond Leaves, Casuarina pods, and bark to simulate natural blackwater conditions. Our Aquatic Arts Botanical Combo Packs are a great way to try all different types of botanicals. Also the AquaZen Botanical Zen Pack has all three items to make black water easy.

Diet and Feeding:

These fish are micropredators, feeding on tiny invertebrates in the wild. In captivity, they accept live baby brine shrimp, microworms, daphnia, and powdered or micro-sized dry foods like Ultra Fresh New Born Fish foods. 

Tank Mates and Compatibility:

Elegant Pencilfish are peaceful and best kept in groups of 6 or more. Ideal tank mates include other small, calm species like Ember Tetras, pygmy Corydoras, and peaceful shrimp. Avoid larger or nippy fish.

Not all Shrimp Safe:
Generally safe with adult dwarf shrimp. Provide dense plant cover to protect any shrimp fry as they are known to be on the menu.

Breeding:

Breeding is rarely documented but likely follows typical Pencilfish behavior: egg-scattering among fine plants or moss. Use soft, acidic water and remove adults after spawning.

Recommended Tank Parameters:

• Temperature: 74° - 80° F (23° - 27° C)
• pH: 5.0 - 6.8
• KH: 0 - 4 dKH
• Minimum Tank Size: 10 gallons

Care Guidelines:

• Diet: Micropredator; feed a variety of live, frozen, and micro dry foods
• Social Behavior: Peaceful; keep in groups of 6 or more
• Origin: Brazil
• Average Adult Size: 1.2 inches (3 cm)
• Average Purchase Size: 0.75 – 1 inch (1.9 – 2.5 cm)

A Subtle Treasure for the True Aquascaper:
The Elegant Pencilfish is a refined and peaceful shoaler that brings movement and subtle brilliance to any softwater aquarium. Their rarity and grace make them a favorite among experienced hobbyists and blackwater aquascaping fans.

Live Arrival Guarantee:
All Aquatic Arts brand animals come with a 100% live arrival guarantee, plus free email support!